Gas Detection Systems

Most gas detection systems are installed with the primary objective of keeping people safe at work or protecting a site against the risk of explosion or fire. Fixed systems are specified when there is a need to continuously monitor gases from a permanent location.

Each application has its own conditions and legal regulations. Subsequently, each site has its own requirements and challenges.

What Services Can You Expect from a1-cbiss?

Legislation Knowhow

We apply the relevant health and safety regulations within the Health and Safety at Work Act 1974.

  • Applying exposure limits to keep people safe at work is critical.

Design Expertise

We design your gas detection system using a simple alarm system with a single point of detection to a highly complex system with hundreds of points.

Preventative Maintenance

Problems are less likely to arise if your fixed gas detectors have a regular service plan. a1-cbiss have a nationwide service team.

Site Survey

Whether you are unsure of which gas technology you need, how many sensors you require or where they need to be positioned, a1-cbiss can conduct a site survey anywhere in the UK. By working on a range of factors we’ll calculate what you need and provide you with a no obligation quote.

Total Personal Safety

a1-cbiss can also supply a wide range of products for everything related to gas detection – Personal gas detectors, Spot Check Tubes & Respirators.

Gas Detection Systems

We have the in-house engineering capabilities to create a completely new gas detection system or integrate the solution into existing infrastructure.

A typical system comprises:

Gas or Flame Detector
Control Panel
Alarm/Warning System
Data Acquisition Software
Service Plan

Gas Detection Systems

Gas Detection

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Flame Detection

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Sampling Systems

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There is a reliance from numerous people upon a gas detection system to keep workers safe at work or to protect the site itself. Installing the right type of detection system isn’t straightforward yet critical it’s specified correctly. With various factors involved in the purchasing decision, we have listed several factors for you to consider.

We provide a reliable nationwide service co-ordinated from our dedicated help-desk team that will ensure works are planned at a time that is convenient for you.

Gas Hazards

Some gases will naturally rest high or low in a room depending on their density. This will impact the decision on where to position the gas transmitters.

Environmental Conditions

Is gas detection taking place in humid, under pressure or high temperature environments?


Air flow will impact whether gas reaches the sensor.


Threshold limits – how many alarm levels are required?


Outputs to shut down the system or activate ventilation.

System Capabilities

Continuous Area Monitoring

To protect premises from threat of explosion or damage. Systems activate ventilation, shutdown the process or turn on fans to reduce threat of gases.

Local Alarms for Personal Gas Exposure

Allow people to work safely and confidently until risk of dangerous gas inhalation or explosive atmosphere occurs. Nearby alarms alert to possible danger.

Process Gas Sampling

Gas analysers are used in research studies or field measurements for profiling the composition of gas samples or perhaps, implementing accurate dosing or control systems.

Want to Learn More?

Download our guide to learn more about our fixed gas detection systems.

Fixed Gas Detectors

Fixed gas detectors, also known as "transmitters" or "gas sensor heads" are installed to protect personnel, detect hazardous gases or analyse the environment. The fixed gas detector detects the presence of a target gas and relays it back to a control panel.

Are You Compliant?

Have you had a visit from the Health & Safety Executive? Managers of industrial sites must ensure that the gas in their workplace doesn’t exceed the EH40 workplace exposure limits (WELs) whilst adhering to COSHH 2002. Consult a1-cbiss about how to comply with relative legislation.

Huge Library of Gases

a1-cbiss supply gas detectors that monitor a wide range of target gases including toxic, flammable, oxygen, and VOCs.

Is It Safe to Enter?

Safe entry systems indicate whether it’s safe for people to enter a room.

Single Point to Multipoint Systems

a1-cbiss have successfully delivered gas detection projects are installed on the UK’s largest industrial sites - manufacturing plants, breweries, refineries.

Control the Environment

Gas detectors can activate extractor fans, turn off process supply lines or create an alarm to warn personnel of danger.

Quality Leading Brands

a1-cbiss work with the leading gas detection brands (Teledyne, Crowcon, Detronics to name a few) to engineer a system fit for our client’s needs.

Predictive Maintenance

Prevention is better than waiting for an accident to happen.

Flame Detectors

Fire or explosion causes catastrophic consequences as it rips through industrial environments. It is essential that high-risk operations install flame detectors that activate safety features as the risk of fire increases.

Control the Environment

Reliably signal alarms, control fire suppression systems and shutdown processes.

Reliable Flame Detector Performance

The Detronics brand of flame detectors protects your personnel, assets, and property.

Gas Samplers

Our bespoke gas analyser systems deliver cost-effective solutions with high sensitivity, accuracy, and reliability.

Reduce Costs

a1-cbiss would recommend the installation of a sampling/sniffer system in applications where over 4 points of gas detection are required to save the costs of placing individual gas sensors. This is made possible because the gas sensing element takes place within the system rather than installing a gas sensor at each fixed point of detection.

Easy to Service

If the properties of the gas mean that it needs to be detected at the highest point, in a difficult to reach place, or within a dangerous location, consider drawing the sample to a more convenient location. This simplifies service and calibration.

Gas Conditioning Required?

Are the sampling conditions out of the ordinary? Hot, wet or dusty conditions could damage the analyser therefore the gas sample needs to be conditioned prior to measurement.

Gas Analysis in Non-Safety Critical Environment

Gas analysers utilising infrared (IR) and photoacoustic technologies are used in research studies or field measurements for profiling the composition of multiple compounds from ppb and ppm level to percent level concentrations.


Benefit from frequent preventative maintenance site visits.

Large, regional service support network
Scheduled service and calibration visits per year
Guaranteed response time depending on your site requirements
Site allocated service engineer
Comprehensive stockists of critical spare parts and consumables
Dedicated office-based customer service advisor
Fully trained industry specialists on hand to provide full service, repair & calibration

Case Study - IR Sensors Overcome Silicone Dust Problem at Waste Facility

Discover how an a1-cbiss site survey revealed the inadequate use of pellistor sensors at a waste facility following the issues with their hydrocarbon gas readings.

News - New Calibration Requirements Set by the EA

The EA are keen to improve the accuracy of CO2 data and other pollutants reported under the Pollution Inventory and therefore are asking all EfW plant operators to calibrate their CO2 and N2O CEMS and flow meters by 2023. Find out exactly what the EA are asking for, and how to make sure you're still compliant.

Talk with the Experts

Contact us - Our application specialists will identify the best product for your needs based on the information that you can provide. If you're unsure about what's important, consider booking a site survey.

Book a site survey - Our specialists consider your process, your site conditions and work with you to understand your needs. It is the most effective means of ensuring your system is completely fit for purpose.